How many hydrogen atoms are there in the following compound: 4CHA (2 points) Select one:
a 4
b. 8
c. 12
d. 16

Which is not true about oxygen-17 and oxygen-18?

Asolid cylinder and a cylindrical shell have the same mass, same radius, and turn on frictionless, horizontal axles. the cylindrical shell has light-weight spokes connecting the shell to the axle. a rope is wrapped around each cylinder and tied to blocks of equal masses that are held the same height above the ground. both blocks are released simultaneously. the ropes do not slip. which block hits the ground first? or is it a tie?

How much energy is supplied to each coulomb of charge that flows through a 12-v battery?